Highest rate first
The debt avalanche is a repayment strategy that prioritizes the debt with the highest interest rate. You continue making at least the required payment on every debt, then direct available extra money to the highest-rate target. After that debt is repaid, its payment and the extra amount move to the next-highest rate.
The strategy is designed to address the costliest rate first. When balances and payments behave as assumed, it will generally produce less interest than prioritizing a lower-rate debt. It may not produce the quickest first account closure, especially when the highest-rate balance is large.
How to build an avalanche
Start with accurate information from current statements:
- Current balance for every debt.
- Applicable APR for each balance.
- Required payment and due date.
- Promotional expiration dates or variable-rate terms.
- Any prepayment restrictions.
Order the debts from highest APR to lowest. Continue minimum payments on every account. Send only the planned extra amount to the first target. When that target reaches zero, redirect the amount that had been going to it toward the next debt rather than absorbing it into routine spending.
If two rates are equal, a secondary rule can break the tie. You might choose the smaller balance for an earlier closure or the debt with less favorable terms. Write down the rule so the plan stays consistent.
Tradeoffs to consider
The avalanche emphasizes estimated interest cost. Another common strategy, the debt snowball, targets the smallest balance first and may create a quicker visible win. The snowball can cost more when it leaves high-rate balances outstanding longer, but some people find its milestones easier to maintain.
Neither method replaces cash-flow planning. Keep required accounts current, cover essential expenses, and consider a reasonable emergency buffer. Delinquent, secured, deferred-interest, or legally urgent debts may need attention that a simple APR ranking does not capture. Professional guidance may be appropriate when payments are unaffordable or accounts are in collection.
Comparing the strategy in EastStar
EastStar can compare scenarios that direct extra money toward different debts. Review the estimated debt-free date and interest cost, but also notice how long it takes for the first balance to disappear and whether the monthly commitment is realistic.
The projection assumes stable APRs and scheduled payments within a simplified monthly model. Actual results can change with daily accrual, variable rates, fees, new charges, payment allocation, or a missed payment. A promotional rate ending can also change which debt has the highest cost.
Use the avalanche as a repeatable decision rule rather than a guarantee. Recheck balances and rates periodically, especially after a payoff or rate change, and update the plan before deciding where the next extra dollar should go.
The strategy also depends on continuing every other required payment. Sending all available money to the highest-rate account while missing another account's minimum can trigger costs and consequences that overwhelm the modeled savings. Set up the required payments first, then define the separate extra amount. If the target debt has a variable rate, repeat the ranking when the rate changes rather than relying on the original order indefinitely.